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  4. What will be the normality of a solution obtained by mixing 0.45 N and 0.60 N NaOH in the ratio 2: 1 by volume:

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Q. What will be the normality of a solution obtained by mixing $0.45$ $N$ and $0.60$ $N$ $NaOH$ in the ratio $2 : 1$ by volume:

Some Basic Concepts of Chemistry

Solution:

meq. of $NaOH = 0.45 \times 2V + 0.6 \times V$
Total volume $= 3\, V$
$\therefore N \,\times\, 3V=0.45\,\times\,2V\,+\,0.6V$;
$\therefore N = 0.5$